1. 使用嵌套的for循环:
int[][] array = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};for (int i = 0; i < array.length; i++) {for (int j = 0; j < array[i].length; j++) {System.out.print(array[i][j] + " ");}System.out.println();}
2. 使用增强for循环(foreach循环):

int[][] array = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};for (int[] row : array) {for (int num : row) {System.out.print(num + " ");}System.out.println();}
3. 使用Java 8的流API:
int[][] array = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};Arrays.stream(array).forEach(row -> {Arrays.stream(row).forEach(System.out::print);System.out.println();});
